[Giant aneurysm of the intracavernous carotid, complicated by subarachnoid haemorrhage. Emergency treatment by occlusive balloon and thrombosis in situ (author's transl)].

: A 15-year-old adolescent developed a painful ophtalmoplegia and a subarachnoid haemorrhage secondary to fissuration of a giant intracavernous aneurysm. The choice of therapeutic abstention was not retained due to the dissuration. The site excluded any direct approach and ligation of the common carotid was not adopted because of its complications. The method chosen consisted of in situ coagulation of the aneurysmal sac, induced by injection of thrombin after occlusion of the internal carotid by a double-lumen balloon catheter. In case of emergency and when direct approach is impossible, this technique may be useful on the condition of close cooperation between clinicans and radiologists.